When I receive exactly the same optical illusion from different people in very short timeframe, it usually means this particular item has recently become viral around the net. Illusions such as “Whose hugging whom?“, “What’s with them Legs?” and today’s photo are perfect example of viral illusory photos. Check out the oldboy in the below [...]

Let me show you another very old optical illusion. I wanted to share it with you not because of quality of illusion it holds (actually, this one’s pretty naive), but because it seems interesting when you see it from historical view. In one hand it, it may helps us understand how illusions progressed over time. [...]